Solar power generation system for farm sites

Abstract

To suppress a strut from becoming an obstacle in a farm work in a photovoltaic power generation system for farm sites.SOLUTION: A photovoltaic power generation system for farm sites includes an L-type photovoltaic power generation unit and a T-type photovoltaic power generation unit. The L-type photovoltaic power generation unit includes a plurality of struts arranged along one direction, and a plurality of solar panels installed above a farm land by the plurality of struts. The plurality of solar panels are disposed on only one side in the horizontal direction with respect to the plurality of struts. The T-type photovoltaic power generation unit includes a plurality of struts arranged along one direction, and a plurality of solar panels installed above the farm land by the plurality of struts. The plurality of solar panels are disposed on both sides in a horizontal direction with respect to the plurality of struts. The plurality of struts of the L-type photovoltaic power generation unit stands at causeway provided at a boundary of the farm land, and the plurality of struts of the T-type photovoltaic power generation unit stands at causeway provided inside the farm land.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a solar power generation system for agricultural land. [Background technology]

[0002] Patent Document 1 describes a solar power generation system for farmland. In this solar power generation system, concentrating solar panels are installed above the farmland. The concentrating solar panels are configured to use direct sunlight incident on the panels for solar power generation, while scattered light passes through the solar panels and is supplied to the farmland. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-84764 Summary of the Invention [Problem to be solved by the invention]

[0004] In a photovoltaic power generation system for agricultural land, poles for supporting the solar panels must be erected on the farmland, and it is necessary that the presence of such poles does not impede agricultural work.

[0005] In view of the above, this specification provides a technology that can prevent the poles supporting the solar panels in a photovoltaic power generation system for farmland from becoming an obstacle to agricultural work. [Means for solving the problem]

[0006] The technology disclosed in this specification is embodied in a solar power generation system for agricultural land. This solar power generation system includes at least one L-shaped solar power generation unit and at least one T-shaped solar power generation unit. The L-shaped solar power generation unit has multiple support columns arranged in one direction and multiple solar panels installed above the agricultural land by the multiple support columns, with the multiple solar panels arranged on only one horizontal side of the multiple support columns. The T-shaped solar power generation unit has multiple support columns arranged in one direction and multiple solar panels installed above the agricultural land by the multiple support columns, with the multiple solar panels arranged on both horizontal sides of the multiple support columns. The multiple support columns of the L-shaped solar power generation unit are erected on a footpath established at the boundary of the agricultural land, and the multiple support columns of the T-shaped solar power generation unit are erected on a footpath established within the agricultural land.

[0007] In the above-described solar power generation system, the support poles of both the L-shaped solar power generation unit and the T-shaped solar power generation unit are erected on the ridges. This configuration effectively prevents the support poles from becoming an obstacle to agricultural work. In addition, in the above-described solar power generation system, L-shaped solar power generation units are installed on ridges located on the boundaries of farmland, while T-shaped solar power generation units are installed on ridges located within the farmland. In other words, L-shaped solar power generation units and T-shaped solar power generation units are used depending on the location of the ridges in the farmland. This allows solar panels to be installed over a wide area of ​​farmland, even if the location for erecting the support poles is limited to the ridges. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a side view schematically showing a solar power generation system 10 according to an embodiment of the present invention. [Figure 2] 1 is a plan view schematically showing a solar power generation system 10 according to an embodiment. [Figure 3] FIG. 10 is a diagram showing an example in which a support 22 of an L-shaped solar power generation unit 12 is erected on a slope 4b of a ridge 4 provided on the boundary of farmland 2. [Figure 4] FIG. 10 is a diagram showing an example in which a support 42 of a T-shaped solar power generation unit 14 is erected on a slope 6a of a ridge 6 provided inside farmland 2. DETAILED DESCRIPTION OF THE INVENTION

[0009] In one embodiment of the present technology, in an L-shaped solar power generation unit, multiple support pillars may be erected on the slope (inclined surface) of a ridge along the boundary of agricultural land. This configuration can prevent or minimize the support pillars from becoming an obstacle when people or machinery pass through the ridge. Additionally, the support pillars driven into the slope of the ridge can also function as reinforcement to prevent the ridge from collapsing.

[0010] In the above-described embodiment, the slope on which the plurality of support posts are erected may be a slope located outside the farmland relative to the ridge. With this configuration, the plurality of support posts are positioned away from the area where people and machines perform agricultural work (i.e., the area inside the ridge), which more reliably prevents the support posts from becoming an obstacle to agricultural work.

[0011] In one embodiment of the present technology, in a T-shaped solar power generation unit, multiple support pillars may be erected on the slope of a ridge provided inside farmland. With this configuration, it is possible to avoid or suppress the support pillars from becoming an obstacle when people or machines pass along the ridge. In addition, the support pillars driven into the slope of the ridge can also function as reinforcement materials to prevent the ridge from collapsing.

[0012] In one embodiment of the present technology, in an L-shaped solar power generation unit, multiple solar panels may be arranged so as to slope downward toward multiple support columns. With this configuration, rain falling on the solar panels moves along the slope toward the support columns and falls on or near the footpath (or may be collected by a gutter, etc.). This prevents or suppresses rain falling on the solar panels from falling locally within the farmland, i.e., within the area where crops are grown.

[0013] In one embodiment of the present technology, in a T-shaped solar power generation unit, multiple solar panels may be arranged so as to slope downward toward the multiple support columns. With this configuration, even in a T-shaped solar power generation unit, rain falling on the solar panels moves along the slope toward the support columns and falls on or near the footpath (or may be collected by a gutter, etc.). This prevents or suppresses rain falling on the solar panels from falling locally within the farmland, i.e., within the area where crops are grown. [Example]

[0014] A solar power generation system 10 (hereinafter simply referred to as system 10) according to an embodiment will be described with reference to the drawings. The system 10 according to the embodiment is a solar power generation system for farmland 2, and is installed so as to cover part or all of the farmland 2 from above.

[0015] 1 and 2, the system 10 includes at least one L-type solar power generation unit 12 and at least one T-type solar power generation unit 14. The specific numbers of the units 12 and 14 are not particularly limited. Depending on the area and shape of the farmland 2, one or more L-type solar power generation units 12 and one or more T-type solar power generation units 14 can be freely combined.

[0016] The L-shaped solar power generation unit 12 has a plurality of support pillars 22 and a plurality of solar panels 24. The plurality of support pillars 22 are arranged in one direction and are each erected on the farmland 2. The plurality of support pillars 22 may be arranged in a single row in one direction, or may be arranged in multiple rows in one direction.

[0017] The solar panel 24 is a panel-shaped device that receives light and outputs electric power. The solar panel 24 is also called a photovoltaic power generation module. The specific configuration of the solar panel 24 is not particularly limited. Typically, the solar panel 24 has a plurality of solar cells arranged in a matrix. The solar panel 24 may be a double-sided solar panel having solar cells on both sides. Alternatively, the solar panel 24 may be a transparent solar panel that transmits a portion of the irradiated light.

[0018] The multiple solar panels 24 are installed above the farmland 2 by multiple support columns 22. In particular, in the L-shaped solar power generation unit 12, the multiple solar panels 24 are arranged on only one horizontal side of the multiple support columns 22. As a result, the L-shaped solar power generation unit 12 has a generally L-shaped appearance in side view (see FIG. 1 ). Here, the specific support structure for the solar panels 24 is not particularly limited. As an example, the L-shaped solar power generation unit 12 in this embodiment has multiple vertical beams 26 extending horizontally from the multiple support columns 22 to one horizontal side, and multiple horizontal rails 28 spanning the multiple vertical beams 26, and the multiple solar panels 24 are attached to the multiple horizontal rails 28. The multiple solar panels 24 are arranged in a matrix along a plane that forms an angle (e.g., 5 degrees) with the horizontal.

[0019] The T-shaped solar power generation unit 14 has a plurality of support pillars 42 and a plurality of solar panels 44. The plurality of support pillars 42 are arranged in one direction and are each erected on the farmland 2. The plurality of support pillars 42 may be arranged in a single row in one direction, or in multiple rows in one direction. The solar panels 44 are panel-shaped devices that receive light and output electricity, similar to those of the L-shaped solar power generation unit 12 described above. The solar panels 24, 44 in the two units 12, 14 may have the same configuration, or may have different configurations.

[0020] A plurality of solar panels 44 are installed above the farmland 2 by a plurality of support columns 42. In particular, in the T-shaped solar power generation unit 14, the plurality of solar panels 44 are arranged on both horizontal sides of the plurality of support columns 42. As a result, the T-shaped solar power generation unit 14 has a generally T-shaped appearance in a side view (see FIG. 1). Even in the T-shaped solar power generation unit 14, the specific support structure for the solar panels 44 is not particularly limited. As an example, the T-shaped solar power generation unit 14 in this embodiment has a plurality of vertical beams 46 extending horizontally from the plurality of support columns 42 on both horizontal sides, and a plurality of horizontal rails 48 spanning the vertical beams 46, and the plurality of solar panels 44 are attached to the horizontal rails 48. The plurality of solar panels 44 are arranged in a matrix along a plane that forms an angle (e.g., 5 degrees) with the horizontal.

[0021] Conventionally, when a solar power generation system is installed on farmland 2, the presence of the support poles can sometimes become an obstacle to agricultural work. In this regard, in the system 10 of this embodiment, the support poles 22, 42 of each unit 12, 14 are erected on the ridges 4, 6 provided in the farmland 2. In this way, by limiting the positions at which the support poles 22, 42 are erected to the ridges 4, 6, it is possible to effectively prevent the presence of the support poles 22, 42 from becoming an obstacle to agricultural work.

[0022] Additionally, the support pillars 22 of the L-shaped solar power generation units 12 are erected on the ridges 4 provided on the boundary of the farmland 2, and the support pillars 42 of the T-shaped solar power generation units 14 are erected on the ridges 6 provided inside the farmland 2. In other words, the L-shaped solar power generation units 12 are installed on the ridges 4 provided on the boundary of the farmland 2, and the T-shaped solar power generation units 14 are installed on the ridges 6 provided inside the farmland 2. In this way, by selectively using the L-shaped solar power generation units 12 and the T-shaped solar power generation units 14 depending on the positions of the ridges 4, 6 in the farmland 2, it is possible to install solar panels 24, 44 over a wide area of ​​the farmland 2, even if the positions at which the support pillars 22, 42 are erected are limited to the ridges 4, 6.

[0023] Although not particularly limited, in the L-shaped solar power generation unit 12, the multiple solar panels 24 are arranged so as to slope downward as they approach the multiple support columns 22. With this configuration, rain that falls on the solar panels 24 moves along the slope toward the support columns 22 and falls on the footpath 4 or its vicinity (or may be collected by a gutter or the like). This prevents rain that falls on the solar panels 24 from falling locally within the farmland 2, i.e., within the area where crops are grown, and prevents adverse effects on the crops. Similarly, in the T-shaped solar power generation unit 14, the multiple solar panels 44 are arranged so as to slope downward as they approach the multiple support columns 42.

[0024] 3, in the L-shaped solar power generation unit 12, a plurality of support pillars 22 may be erected on the slopes 4a, 4b of a ridge 4 provided at the boundary of farmland 2. With this configuration, it is possible to avoid or reduce the support pillars 22 from becoming an obstacle when people or machines pass along the ridge. In addition, the support pillars 22 driven into the slopes 4a, 4b of the ridge 4 can also function as reinforcing materials to prevent the ridge 4 from collapsing.

[0025] The multiple support posts 22 may be erected on either of a pair of slopes 4a, 4b that exist on both sides of the ridge 4. However, it is also effective to set the slope on which the multiple support posts 22 are erected to be slope 4b that is located outside the farmland 2 with respect to the ridge 4. With this configuration, the multiple support posts 22 are positioned away from the area where people and machines perform agricultural work (i.e., the area inside the ridge 4), which more reliably prevents the support posts 22 from becoming an obstacle to agricultural work.

[0026] 4, in the T-shaped solar power generation unit 14, multiple support pillars 42 may be erected on the slope 6a of the levee 6 provided inside the farmland 2. Even in this case, it is possible to avoid or reduce the support pillars 42 from becoming an obstacle when people or machines pass along the levee 6. Furthermore, the support pillars 42 driven into the slope 6a of the levee 6 can also function as reinforcing material to prevent the levee 6 from collapsing.

[0027] Although the embodiments of the present technology have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples exemplified above. The technical elements described in this specification or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technology exemplified in this specification or drawings simultaneously achieves multiple objectives, and achieving one of these objectives itself has technical utility. [Explanation of symbols]

[0028] 2: farmland, 4: ridge provided on the boundary of farmland 2, 6: ridge provided inside farmland 2, 4a, 4b: slope of ridge 4, 6a: slope of ridge 6, 10: solar power generation system, 12: L-shaped solar power generation unit, 14: T-shaped solar power generation unit, 22, 42: support, 24, 44: solar panel, 26, 46: vertical beam, 28, 48: horizontal rail

Claims

1. A solar power generation system for agricultural land, comprising: At least one L-type solar power generation unit and at least one T-type solar power generation unit are provided, The L-shaped solar power generation unit is A plurality of support columns arranged in one direction; a plurality of solar panels installed above the farmland by the plurality of supports; the plurality of solar panels are arranged on only one side in a horizontal direction with respect to the plurality of support poles, The T-type solar power generation unit is A plurality of support columns arranged in one direction; a plurality of solar panels installed above the farmland by the plurality of supports; the plurality of solar panels are arranged on both sides of the plurality of columns in a horizontal direction, The plurality of support columns of the L-shaped solar power generation unit are erected on a footpath provided on the boundary of the farmland, The plurality of columns of the T-shaped solar power generation unit are erected on a footpath provided within the farmland. Solar power generation system.

2. The photovoltaic power generation system according to claim 1 , wherein in the L-shaped photovoltaic power generation unit, the plurality of supports are erected on a slope of a footpath provided on a boundary of the farmland.

3. The solar power generation system according to claim 2 , wherein the slope on which the plurality of support columns are erected is a slope located outside the farmland with respect to the footpath.

4. The photovoltaic power generation system according to claim 1 , wherein in the T-shaped photovoltaic power generation unit, the plurality of supports are erected on a slope of a footpath provided inside the farmland.

5. The solar power generation system according to claim 1 , wherein in the L-shaped solar power generation unit, the plurality of solar panels are arranged so as to incline downward as they approach the plurality of columns.

6. The solar power generation system according to claim 1 , wherein in the T-shaped solar power generation unit, the plurality of solar panels are arranged so as to slope downward toward the plurality of columns.

Images